register event listeners depending on the installed packages

symfony · Jun 2, 2020 · 4e3c374 · 4e3c374
1 parent e5b5d9e
commit 4e3c374
Showing 1 changed file with 11 additions and 4 deletions.
diff --git a/src/Symfony/Bridge/Doctrine/SchemaListener/MessengerTransportDoctrineSchemaSubscriber.php b/src/Symfony/Bridge/Doctrine/SchemaListener/MessengerTransportDoctrineSchemaSubscriber.php
@@ -89,9 +89,16 @@ public function onSchemaCreateTable(SchemaCreateTableEventArgs $event): void
 
     public function getSubscribedEvents(): array
     {
-        return [
-            ToolEvents::postGenerateSchema,
-            Events::onSchemaCreateTable,
-        ];
+        $subscribedEvents = [];
+
+        if (class_exists(ToolEvents::class)) {
+            $subscribedEvents[] = ToolEvents::postGenerateSchema;
+        }
+
+        if (class_exists(Events::class)) {
+            $subscribedEvents[] = Events::onSchemaCreateTable;
+        }
+
+        return $subscribedEvents;
     }
 }